Hitachi ZW180 Operator's Manual page 225

10. One point each to front and rear axle support pins
--- every 100 hours
Front (16)
Rear (17)
11. One point to front propeller shaft universal (18)
--- every 2000 hours
NOTE: When the machine is continuously operated under
severe conditions for a long time, shorten the greasing
intervals.
MAINTENANCE
(16 and 17)
17
7-25
ZW180
17
ZW220
17
ZW250, ZW310
18
16
M4GF-07-002
16
M4GB-07-011
16
M4GB-07-012
M4GB-07-013